.box {
    width: 100%;
}
.box .content {
    width: 600px;
    margin: 100px auto;
}
.box .content p {
    color: blue;
    font-size: 30px;
}
.box .content button {
    color: #fff;
    background: green;
    border: none;
    cursor: pointer;
}
.box .content ul {
    padding: 20px;
    border: 1px solid;
}
.box .content ul li {
    margin-top: 20px;
    list-style: none;
    display: flex;
    justify-content: space-between;
}